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<h1 class="title">BlockEmitter.qml 示例文件</h1>
<span class="subtitle">demos/samegame/content/BlockEmitter.qml</span>
<!-- $$$demos/samegame/content/BlockEmitter.qml-description -->
<div class="descr"> <a name="details"></a>
<pre class="qml">

  <span class="comment">/****************************************************************************
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  ** Copyright (C) 2017 The Qt Company Ltd.
  ** Contact: https://www.qt.io/licensing/
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  ** This file is part of the examples of the Qt Toolkit.
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  import QtQuick 2.0
  import QtQuick.Particles 2.0
  <span class="comment">// Needed for singletons QTBUG-34418</span>
  import &quot;.&quot;

  <span class="type"><a href="../qtquick/qml-qtquick-particles-emitter.html">Emitter</a></span> {
      property <span class="type"><a href="../qtquick/qml-qtquick-item.html">Item</a></span> <span class="name">block</span>: <span class="name">parent</span>
      <span class="name">velocity</span>: <span class="name">TargetDirection</span>{<span class="name">targetX</span>: <span class="name">block</span>.<span class="name">width</span><span class="operator">/</span><span class="number">2</span>; <span class="name">targetY</span>: <span class="name">block</span>.<span class="name">height</span><span class="operator">/</span><span class="number">2</span>; <span class="name">magnitude</span>: -<span class="number">40</span>; <span class="name">magnitudeVariation</span>: <span class="number">40</span>}
      <span class="name">acceleration</span>: <span class="name">TargetDirection</span>{<span class="name">targetX</span>: <span class="name">block</span>.<span class="name">width</span><span class="operator">/</span><span class="number">2</span>; <span class="name">targetY</span>: <span class="name">block</span>.<span class="name">height</span><span class="operator">/</span><span class="number">2</span>; <span class="name">magnitude</span>: -<span class="number">100</span>;}
      <span class="name">shape</span>: <span class="name">EllipseShape</span>{<span class="name">fill</span>:<span class="number">true</span>}
      <span class="name">enabled</span>: <span class="number">false</span>;
      <span class="name">lifeSpan</span>: <span class="number">700</span>; <span class="name">lifeSpanVariation</span>: <span class="number">100</span>
      <span class="name">emitRate</span>: <span class="number">1000</span>
      <span class="name">maximumEmitted</span>: <span class="number">100</span> <span class="comment">//only fires 0.1s bursts (still 2x old number)</span>
      <span class="name">size</span>: <span class="name">Settings</span>.<span class="name">blockSize</span> <span class="operator">*</span> <span class="number">0.85</span>
      <span class="name">endSize</span>: <span class="name">Settings</span>.<span class="name">blockSize</span> <span class="operator">*</span> <span class="number">0.85</span> <span class="operator">/</span><span class="number">2</span>
  }

</pre>
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